Mook, Charles Craig, 1887-1966.Cope, E. D. (Edward Drinker), 1840-1897.2005-10-062005-10-061921http://hdl.handle.net/2246/1732p. 117-121, [2] leaves of plates : ill. ; 24 cm.3112556 bytesapplication/pdfen-USQH1 .A4 vol.44, art.12, 1921Crocodilians, Fossil -- Utah.Crocodylus -- Anatomy.Skull.Reptiles, Fossil -- Utah.Paleontology -- Eocene -- Utah.Paleontology -- Utah.Paleontology -- Green River Formation.The skull of Crocodilus acer Cope. Bulletin of the AMNH ; v. 44, article 12.text